OCHS Planet Earth group 2
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Created by:
rmoehlmann on December 28, 2010
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Description:
ch 22.5 vocab from Prentice Hall
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11 terms
Terms | Definitions |
|---|---|
 earthquake | shaking and vibration at the surface of the earth resulting from underground movement along a fault plane or from volcanic activity |
| seismic wave | A vibration that travels through earth carrying the energy released during an earthquake |
| focus | The point beneath Earth's surface where rock breaks under stress and causes an earthquake |
| epicenter | the point on the Earth's surface directly above the focus of an earthquake |
| P waves | primary waves-push/pull waves; 1st, fastest, & go through solids & liquids |
| S waves | secondary waves; transverse waves caused by earthquakes, only go through solids |
| surface waves | are the slowest and largest of the seismic waves and cause most of the destruction during an earthquake; form when P and S waves reach the surface |
| stress | (physics) force that produces strain on a physical body; causes rock to change shape or volume |
| fold | a bend in layers of rock |
| fault | (geology) a crack in the earth's crust resulting from the displacement of one side with respect to the other |
| tsunami | a large wave produced by an earthquake on the ocean floor |
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